Structural · S-432XH

Typical Beam Web Penetration

Materials

Steel

Elements

Beams Floors / Slabs Connections / Plates Reinforcing Roof / Floor Openings

Connections

Welded Connection Shear Stud / Composite

About this detail

This structural steel detail shows the reinforcement requirements for penetrations cut into the web of a wide flange steel beam supporting a composite metal deck slab. Collar plates and doubler plates are welded to the beam web around the opening using fillet welds and bevel welds, with all plates specified at a minimum yield strength of 50 ksi. For field-cut penetrations, all reinforcing plates and welding must be completed prior to cutting the opening. Additional slab reinforcing consisting of number four bars at twelve inches spacing is provided centered over the opening and extending two feet past each side. When penetrations are located within three feet of the beam end, doubler plates must extend to the end of the beam.

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